eccodes/examples/python/grib_set_pv.py

57 lines
1.4 KiB
Python

#
# Copyright 2005-2015 ECMWF.
#
# This software is licensed under the terms of the Apache Licence Version 2.0
# which can be obtained at http://www.apache.org/licenses/LICENSE-2.0.
#
# In applying this licence, ECMWF does not waive the privileges and immunities granted to it by
# virtue of its status as an intergovernmental organisation nor does it submit to any jurisdiction.
#
import traceback
import sys
from eccodes import *
VERBOSE=1 # verbose error reporting
def example():
"""
Encoding of the pv coefficients.
"""
# read the coefficients from file
pv = []
for line in open('../../data/60_model_levels'):
pv.extend([float(x) for x in line.strip().split('\t')])
numberOfLevels = 60
numberOfCoefficients = 2 * (numberOfLevels + 1)
assert(len(pv) == numberOfCoefficients)
fout = open('out.pv.grib1','w')
gid = codes_new_from_samples('reduced_gg_sfc_grib1')
codes_set(gid,'typeOfLevel','hybrid')
codes_set(gid,'level',2)
codes_set(gid,'PVPresent',1)
codes_set_array(gid,'pv',pv)
codes_write(gid,fout)
codes_release(gid)
fout.close()
def main():
try:
example()
except CodesInternalError,err:
if VERBOSE:
traceback.print_exc(file=sys.stderr)
else:
print >>sys.stderr,err.msg
return 1
if __name__ == '__main__':
sys.exit(main())